Pipe-reamer.



- R. LONG.

PIPE BEAMER.

APPLICATION FILED 11110.16, 1911.

Patented Sept. 17,1912.

To all whom it may concern:

JOHN a. LONG, on EAST AKRON, 01110.

PIPE-REAMER.

Specification of Letters Patent.

Patented Sept. 17, 1912.

Application filed December 15, 1911. Serial No. 666,051.

Be it known that 1, JOHN R. Lone, citizen of the United States, residing at East Akron, in the county of Summit and State of Ohio, have invented certain new and useful Improvements in Pipe-Reamers, of which the following is a specification.

This invention has reference to pipe reamers, and the invention consists in thesimple mechanism shown and which is bodily atv tachable to the pipe to be reamed, all substantially as herein set forth 'and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a side elevation of the invention and of a pipe therewith, and'Fig. 2 is a longitudinal section of Fig. 1. Fig. 3 is a cross section on line 33, Fig. 2. Fig. 4 is a sectional elevation of the coupling member of the reamer casing, and Fig. 5 a viewof another or alternate form of coupling member adapted to a larger size of pipe.

The elements in the foregoing organization consist in areamer or reaming tool 2 of the usual conical shape and provided wit-h cutting'teeth lengthwise on its surface, and the said head has a cylindrical shank 3 which is constructed in this instance with a. transverse hole adapted to receive an operating lever or handle 4. The said tool and its shank or stemare mounted in a casing c, which has a reduced tubular extension 5 corresponding to the size of the shank 3 and supporting the same,'and the surface of the body of the said casing is preferably milled for convenience of handling and screwing the parts together, especially in connecting the coupling member at therewith. The said member d has different diameters in any case whether adapted to couple up. with one or another size of pipe, and as seen in Figs. 1, :2 and 3, the smaller diameter 8 which screws onto pipe P is offset from the larger diam eter 9 which screws onto the casing c by a tapered portion 7 which corresponds to the taper of tool 2 inside. The larger diameter 9 of said coupling also is milled as shown. The casing c is screwed into the coupling d to its limit and the coupling (1 screwed on to pipe P for work.

The feed provided for tool 2 comprises a spring S which is wound about the shank 3 within casing c and bears upon a band or collar 10 which lies against the head of the tool while the opposite end of the spring engages a pin 12in casing c and prevents the rotation of the spring when the tool is rotated. 7

In Fig. 5 I show one of several difierent sizes of couplings which can be used according to the size of the pipe, and in which case the two diameters 8 and 9 of thesaid coupling d are brought very near together and the engagement of'the bur on the pipe'will necessarily come up onto the larger diameter of the tool.

A further feature is the relation of handle 4 to or with the extensione of the casing. \Vhen the tool is not in use the said handle is forced against said extension by the spring S and this is the normal relation. But when the device is engaged on a pipe to be reamed the tool bears against the bur ofthe pipe and is forced back as the device is screwed on the pipe and which carries the handle 4 away from extension 5 about as seen in Fig. 2. This also puts spring S under working tension. rotated to cut the bur the spring exerts the feeding pressure and the limit of the penetration of the tool in the pipe is fixed by handle-4 which then impinges against the extension 5 and the tool can go no farther.

The thrust or penetration of the tool is limited by the handle 4 and the tool itself is confined in casing c by the handle even when the colpling d is removed. The extension 5 has su cient length to suport the tool horizontally in the casing apart from other help, and the parts are assembled by first placing the spring and collar 10 on the shank 3 and then projecting said shank through the easing and inserting the handle 4.

What I claim is:

1. A pipe reaming device having a body with a tubular bearing on its rear and a reducing coupling of two diameters detachably engaged thereon and threaded internally atboth diameters, a tool having a shank projecting through the said bearing and a pressure coil about the said shank within said body adapted to press the tool forward in work, and a handle through said shank adapted to rotate the tool and to come against said bearing and limit the thrust of the tool forward beyond working limits.

2. A pipe reaming device comprising a body having a tubular extension of reduced cross section at its rear and threaded externally at its front and a coupling member Then as the tool is.

' v a screwed onto the front of said body and tension and limit the thrust of the tool for- 10 threaded in its smaller diameter, in comward under the action of said spring. bination with a reaming tool iii said body In testimony whereof I aflixmy signature having a sheltlnk extentiiinigl thlz'ouglli1 siid exiin presence of two witnesses. tens1on,a co ar on sal s an att e ase 0 y a T said tool and a sprin confined within said H LOB body coiled about said shank and bearing Witnesses: agamst said collar and a handle through R. B. MOSER. said shank adapted to bear against said ex-- F. C. MUSSUN. 

